GB1269750A - A method for controlling a gain automatically and an apparatus for carrying out the same - Google Patents

A method for controlling a gain automatically and an apparatus for carrying out the same

Info

Publication number
GB1269750A
GB1269750A GB36676/70A GB3667670A GB1269750A GB 1269750 A GB1269750 A GB 1269750A GB 36676/70 A GB36676/70 A GB 36676/70A GB 3667670 A GB3667670 A GB 3667670A GB 1269750 A GB1269750 A GB 1269750A
Authority
GB
United Kingdom
Prior art keywords
variable
equalizer
vary
reactance
line loss
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB36676/70A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of GB1269750A publication Critical patent/GB1269750A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes
    • H03G1/0064—Variable capacitance diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/06—Control of transmission; Equalising by the transmitted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Networks Using Active Elements (AREA)
  • Filters And Equalizers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Manipulation Of Pulses (AREA)
GB36676/70A 1969-08-29 1970-07-29 A method for controlling a gain automatically and an apparatus for carrying out the same Expired GB1269750A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44068533A JPS527304B1 (lt) 1969-08-29 1969-08-29

Publications (1)

Publication Number Publication Date
GB1269750A true GB1269750A (en) 1972-04-06

Family

ID=13376451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36676/70A Expired GB1269750A (en) 1969-08-29 1970-07-29 A method for controlling a gain automatically and an apparatus for carrying out the same

Country Status (5)

Country Link
US (1) US3671886A (lt)
JP (1) JPS527304B1 (lt)
DE (1) DE2042784C3 (lt)
FR (1) FR2059287A5 (lt)
GB (1) GB1269750A (lt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047906A1 (de) * 1980-01-17 1981-09-17 International Standard Electric Corp., 10022 New York, N.Y. Zwischenverstaerker fuer digitale nachrichtenuebertragungssysteme

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL162278C (nl) * 1971-03-27 1980-04-15 Philips Nv Lijnversterker.
CA969689A (en) * 1973-05-02 1975-06-17 Microsystems International Limited Audio frequency automatic gain control circuit
US3824501A (en) * 1973-07-12 1974-07-16 Bell Telephone Labor Inc Automatic cable equalizer
US3904824A (en) * 1973-12-26 1975-09-09 Ibm Automatic gain control for encoded data
GB1520810A (en) * 1975-12-18 1978-08-09 Gen Electric Co Ltd Regenerative repeaters for digital transmission systems
JPS5910094B2 (ja) * 1978-04-12 1984-03-07 日本電気株式会社 振幅等化装置
JPS5531368A (en) * 1978-08-29 1980-03-05 Fujitsu Ltd Transmission amount control circuit
US4251782A (en) * 1979-01-17 1981-02-17 Rockwell International Corporation Multiple tuned circuit correction apparatus
DE2905903A1 (de) * 1979-02-16 1980-08-28 Licentia Gmbh Schaltungsanordnung zur amplituden- und grundlinienstabilisierung eines pcm-signals
US4273963A (en) * 1979-05-25 1981-06-16 Bell Telephone Laboratories, Incorporated Automatic equalization for digital transmission systems
DE3047657A1 (de) * 1980-12-18 1982-07-01 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur addaptiven quantisierten leitungsentzerrung bei der digitalen uebertragung
JPS57152855U (lt) * 1981-03-20 1982-09-25
DE3114770C2 (de) * 1981-04-11 1984-02-02 ANT Nachrichtentechnik GmbH, 7150 Backnang Schaltungsanordnung zur Spitzenwertgleichrichtung
DE3205875C2 (de) * 1982-02-18 1984-03-08 Siemens AG, 1000 Berlin und 8000 München Einstellbare Entzerrerschaltung
CA1201775A (en) * 1982-07-19 1986-03-11 Yukio Akazawa Monolithic integrated circuit device including ac negative feedback type high frequency amplifier circuit
DE3228840A1 (de) * 1982-08-02 1984-02-02 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur gewinnung des regelkriteriums fuer die einstellung adaptiver entzerrer bei digitaler datenuebertragung
US4560949A (en) * 1982-09-27 1985-12-24 Rockwell International Corporation High speed AGC circuit
NL8204087A (nl) * 1982-10-22 1984-05-16 Philips Nv Automatisch instelbaar egalisatie netwerk.
DE3512441A1 (de) * 1985-04-04 1986-10-16 Nixdorf Computer Ag, 4790 Paderborn Verfahren zur erzeugung eines stellsignals fuer einen entzerrer sowie schaltungsanordnung zur durchfuehrung des verfahrens
FR2580446B1 (fr) * 1985-04-16 1987-06-26 Applic Electro Tech Avance Amplificateur-correcteur, en particulier pour liaisons numeriques en bande de base
DE3542068A1 (de) * 1985-11-28 1987-06-04 Kabelmetal Electro Gmbh Schaltungsanordnung zur entzerrung digitaler signale
US4839905A (en) * 1986-04-30 1989-06-13 Conklin Instrument Corporation Multirate automatic equalizer
US4887278A (en) * 1986-07-29 1989-12-12 Integrated Network Corporation Equalizer for digital transmission systems
US4745622A (en) * 1986-07-29 1988-05-17 Integrated Network Corporation Equalizer for digital transmission systems
GB2209444B (en) * 1987-07-21 1992-03-18 Plessey Co Plc Improvements in or relating to amplifiers
US4785265A (en) * 1987-10-01 1988-11-15 The Babcock & Wilcox Company Enhanced automatic line build out
US4964116A (en) * 1988-11-02 1990-10-16 Ant Nachrichtentechnik Gmbh DS3 - line interface linear array (lila)
JP2830087B2 (ja) * 1989-06-30 1998-12-02 ソニー株式会社 周波数特性補正回路
US5052023A (en) * 1990-07-20 1991-09-24 Motorola, Inc. Method and apparatus for received signal equalization
US5191300A (en) * 1992-05-15 1993-03-02 Tutankhamon Electronics, Inc. Local area network amplifier for twisted pair lines
US5448589A (en) * 1994-08-01 1995-09-05 Tektronix, Inc. Circuit for sensing cable effects for automatic equalization
GB2317517B (en) * 1996-09-20 2001-03-14 Nokia Mobile Phones Ltd Amplifier system
US7391829B2 (en) * 2003-07-02 2008-06-24 Intel Corporation Apparatus, system and method for receiver equalization
EP2490332A1 (en) * 2011-02-16 2012-08-22 Nxp B.V. A variable gain amplifier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL174986B (nl) * 1952-01-23 Hansen Ib Schreiner Inrichting voor het opgooien van schijfvormige voorwerpen, zoals kleiduiven.
US2805398A (en) * 1953-12-31 1957-09-03 Bell Telephone Labor Inc Automatic distortion correction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047906A1 (de) * 1980-01-17 1981-09-17 International Standard Electric Corp., 10022 New York, N.Y. Zwischenverstaerker fuer digitale nachrichtenuebertragungssysteme

Also Published As

Publication number Publication date
JPS527304B1 (lt) 1977-03-01
DE2042784C3 (de) 1973-10-04
DE2042784B2 (de) 1973-03-15
FR2059287A5 (lt) 1971-05-28
DE2042784A1 (de) 1971-03-18
US3671886A (en) 1972-06-20

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